So they're not vacuum sealed, like the original glass flasks, and double-walled metal equivalents, interesting ! I imagine maybe the heated air in the double wall will condense and create a bit of a vacuum compared to outside pressure, but still nowhere near the aforementioned other flasks.
Forever sealed at whatever the ambient air pressure was in the moment :-) In this case a vacuum wouldn't be of any value because they are fusing the inner and outer glass layers together rather than using a gasket to keep them separate. This allows heat to conduct which is inefficient, but the lid design mitigates this somewhat so it's a decent compromise. The goal is keeping liquid cold (or warm) for just a few hours rather than a day or two.
@@nohandleleft what are you talking about ? A vacuum would absolutely be of value, because it's supposed to to preserve the temperature for most of the day. In 1892 Sir James Dewar invented the "Thermos" double-walled glass vacuum flask. It was for scientific chemical experiments, where they needed to preserve temperatures, and for more than "just a few hours". "The goal is keeping liquid cold (or warm) for just a few hours rather than a day or two." ??? The goal is a consumer flask that keeps the contents cold/warm ALL DAY, not just "a few hours". People leaving for work, going on a trip, from early in the morning, and finishing later in the day. Same as flasks have been made for 100 years !
The Chinese like warm water and tea. We use double glazing to insulate it. Glass is best because it is healthy and does not contain harmful chemicals！！👍👍👍 I work in foreign trade and know a lot about materials~~😄
![Natanael Cano x Oscar Maydon - Giza [Official Video]](http://i.ytimg.com/vi/eXCS6-MSQ_Y/mqdefault.jpg)
做瓶口融合的那位工人，常年目视火焰，应当佩戴防钠光保护眼镜，她的脸都烤红了。过量的红外线对视网膜是有害的。
Exellent video. Thank you. I wanted to see the threading process on glass.👌👌 (Its not spiral, it is helix - for whoever made the audio commentary)
Great video.I often wonder how great the people who conceived the process were . The workmen and women are so much skilled that the output is perfect.
Thank you for your wonderful comments
Great video love it.. I am From Indonesia watching this video very intresting good job✌️👍👍👍😁🙏
thanks for watching
Nice job and well done ladies and gentlemen, from Australia 👍👍👍👍👍👍👍
uauuuu que lindo -- parabens - adoraria ter um deste lindo copos. #Parabens
做的真是好，没想到我最喜欢的这种玻璃杯是用这么简单的设备做出来的，而且杯子还很精致。中国人太牛逼了。
不错，我也买了一个用了几年了😃
很漂亮禮品，作坊能有粉塵抽吸設備就更好了。
感谢观看
建议高度做低一点点，口径做大，增加容量。
where to buy?
❤❤❤
保温温度多少咧？
So they're not vacuum sealed, like the original glass flasks, and double-walled metal equivalents, interesting !
I imagine maybe the heated air in the double wall will condense and create a bit of a vacuum compared to outside pressure, but still nowhere near the aforementioned other flasks.
Forever sealed at whatever the ambient air pressure was in the moment :-) In this case a vacuum wouldn't be of any value because they are fusing the inner and outer glass layers together rather than using a gasket to keep them separate. This allows heat to conduct which is inefficient, but the lid design mitigates this somewhat so it's a decent compromise. The goal is keeping liquid cold (or warm) for just a few hours rather than a day or two.
@@nohandleleft what are you talking about ? A vacuum would absolutely be of value, because it's supposed to to preserve the temperature for most of the day.
In 1892 Sir James Dewar invented the "Thermos" double-walled glass vacuum flask. It was for scientific chemical experiments, where they needed to preserve temperatures, and for more than "just a few hours".
"The goal is keeping liquid cold (or warm) for just a few hours rather than a day or two." ???
The goal is a consumer flask that keeps the contents cold/warm ALL DAY, not just "a few hours". People leaving for work, going on a trip, from early in the morning, and finishing later in the day. Same as flasks have been made for 100 years !
_Thank you!_
_Very interesting and informative!_
Ok, very good video, but the final products what are made for and where can be used???
The Chinese like warm water and tea. We use double glazing to insulate it. Glass is best because it is healthy and does not contain harmful chemicals！！👍👍👍
I work in foreign trade and know a lot about materials~~😄
Now if there were a vacuum between the walls then you would have something.
Guessing there would be a partial vacuum because of the high temperature expanded air would be sealed inside and contract while cooling.
Nah. If there were a vacuum between the walls then you would have nothing.
Amazing production that requires a high level of craftsmanship because working with fragile material always requires a professional approach
thans for watching 😄
Hello you ,video của bạn thật hấp dẫn
Cảm ơn vì lời khen.
I'm very impressed by processing step for just a glass jug, japan always make things to another level.
China，not Japan😂😂😂
似乎沒有抽真空,否則保溫效果更佳。
火会烧掉氧气，跟拔罐一样。😂我猜的。
@@user-mn1ur1py4p 烧掉氧气变成二氧化碳，也不是真空
空气的热传导其实很差的。这也是为什么羽绒服会蓬松的原因，不是靠羽毛。而是靠羽毛纤维把空气保存住从而保温的。所以这样的杯子只要不漏气，大半天温度都不会低多少。
并不是所有东西都可抽真空，这种双层玻璃杯中间真空就会碎掉。加热过程可以蒸发掉水汽并使空了膨胀，成形温度降下来后内部会是一个半真空的状态，而且干燥空气导热性也很差，就像现在的中空玻璃窗，实际上中间就是干燥空气。
@@papakuraphotoshopnewzealan3039 會變成1/5真空😂
前些年回中國時買了一個回來， 用過一段時間後沒再用了， 保溫功能不好這點能接受， 但是容量對於我來說真的太少了， 容積大概是12安士少一點，大概一罐汽水左右，一口氣喝完還要帶著一個空瓶， 瓶裝汽水一般16安士，應該夠一次半的補水量（按我的攝入量）我現在用的是20安士的保溫壺，是在容量，便攜，和功能性之間最好的妥協。
我以为中间隔层是真空的。
一個十多塊人民幣的東西, 要這麼複雜的工藝....XD
find these handy i do
想到了前陣子破掉的瓶子
現在都怕怕的了
因為
他從裡面那層破了，只因為我的鐵湯匙掉落一點點就掛了😅
😢아 3:10 난 😅 3:47 😮난 😅😮😅🎉😅😮
Это стеклянные термосы?
Да, стакан.
Like mama said, *USE YOUR WORDS* Descriptions would be nicer.
这个频道会很成功
感谢您的支持
亲们，这是中国的哪里啊？
这个在河南郑州
Amazing product from India
Made in China
好奇 製造過程中除了沒抽真空 也沒消除應力 也該檢查表面應力分佈 也可提升產品價值
應該是半真空。因為在封時會加熱，管內空氣熱漲，封完後冷縮就形成半真空。
至於要多少壓力=真空，而他這樣子做會是等於多壓力，我就不知道了。
抽真空的話 你覺得這玻璃能承受住多少壓力?半真空而已,最後你說的應力,他封口後做了瓶口的熱處理,再有就是你說的產品價值,扶貧企業沒有那麼多資金來購買設備,沒看到生產設備都很原始麼,而且玻璃杯這種產品沒有宣傳和特色也很難提高價格,作為一家扶貧企業,不可能將資金賭在產品宣傳上,購買新的設備提高產品品質價格提高不了多少,反而會因為自動化設備而讓人失業,這就和扶貧相違背了
谷哥一下，玻璃溶點溫度和空氣熱漲的倍數，會發現查不到，我不是數學系的，那一堆公式真頭大~
它應該不只半真空而已，應該80~90以內的真空程度~
我们中国制造应该多拍一些各种产品的生产过程，加以中英文字母解释，既有助于科普，也有利于推广高质量的中国制造！
非常好的建议。我们会尝试做的更好
了不起中國一家
不知道還要多少年，才能看到中囯自主研發的產品
竟然是手工的
是的😁
Ooredoo 跟你說話了
玻璃好看.但易碎!...還是不鏽鋼杯耐用.不鏽鋼杯如戰鬥行軍杯.
不锈钢不透明， 很多人不喜欢。
@@papakuraphotoshopnewzealan3039也許吧.
看个人喜好吧！
我就不喜欢不锈钢的东西，当牙齿碰到不锈钢时总感觉有股子铁味。
@@maozi2443 玻璃杯子我碎過兩個.世間沒有十全十美!
@@user-kx1qx2bo3k 这个 …… 像是在说有人没碎过杯子一样！ 哈哈
The outside glass was filthy from dirt and smoke. Not once did I see them cleaned prior to being fused to the inside glass.
眼睛與肺長期下來會有職業傷害。
没什么了不起，很多地方都有人家没有拍片。
中國製的喔.....
我記得雙層玻璃壺跟杯都是德國還荷蘭最早做的，中國的只能說是仿冒或模仿或是偷而已。
要追根溯源的话，德国人也是仿冒了物理学家杜瓦发明的杜瓦瓶
所以人类不能学习同类的知识了？这是什么逻辑？
不懂就別逼逼，火燒的過程還會有空氣嗎？愚蠢裝懂。
I am afraid that my coment can be technicaly useless, but I saw a lot of transgenders working in this factory.
除与月常常常